Pleat

A pleat (older plait) is a type of fold formed by doubling fabric back upon itself and securing it in place. It is commonly used in clothing and upholstery to gather a wide piece of fabric to a narrower circumference.undefined

Pleats are categorized as pressed, that is, ironed or otherwise heat-set into a sharp crease, or unpressed, falling in soft rounded folds.

Pleats sewn into place are called tucks.

Types of pleats

 * Accordion pleats or knife pleats are a form of tight pleating which allows the garment to expand its shape when moving. Accordion pleating is also used for some dress sleeves, such as pleating the end of the elbow, with the fullness of the pleat gathered closely at the cuff. This form of pleating inspired the "skirt dancing" of Loie Fuller. Accordion pleats may also be used in hand fans.


 * Box pleats are knife pleats back-to-back, and have a tendency to spring out from the waistline. They have the same 3:1 ratio as knife pleats, and may also be stacked to form stacked box pleats. These stacked box pleats create more fullness and have a 5:1 ratio. They also create a bulkier seam. Inverted box pleats have the "box" on the inside rather than the outside.


 * Cartridge pleats are used to gather a large amount of fabric into a small waistband or armscye without adding bulk to the seam. This type of pleating also allows the fabric of the skirt or sleeve to spring out from the seam. During the 15th and 16th centuries, this form of pleating was popular in the garments of men and women. Fabric is evenly gathered using two or more lengths of basting stitches, and the top of each pleat is whipstitched onto the waistband or armscye. Cartridge pleating was resurrected in the 1840s to attach the increasingly full bell-shaped skirts to the fashionable narrow waist.undefined


 * Fluted pleats or flutings are very small, rounded or pressed pleats used as trimmings.  The name comes from their resemblance to a pan  flute.


 * Fortuny pleats are crisp pleats set in silk fabrics by designer Mariano Fortuny in the early 20th century, using a secret pleat-setting process which is still not understood.


 * Honeycomb pleats are narrow, rolled pleats used as a foundation for smocking.


 * Kick pleats are short pleats leading upwards from the bottom hem of garments such as skirts or coats, usually at the back. They allow the garment to drape straight down when stationary while also allowing freedom of movement.


 * Knife pleats are used for basic gathering purposes, and form a smooth line rather than springing away from the seam they have been gathered to. The pleats have a 3:1 ratio–three inches of fabric will create one inch of finished pleat. Knife pleats can be recognized by the way that they overlap in the seam.[3]


 * Organ pleats are parallel rows of softly rounded pleats resembling the pipes of a pipe organ. Carl Köhler suggests that these are made by inserting one or more gores into a panel of fabric.


 * Plissé pleats are narrow pleats set by gathering fabric with stitches, wetting the fabric, and "setting" the pleats by allowing the wet fabric to dry under weight or tension. Linen chemises or smocks pleated with this technique have been found in the 10th century Vikinggraves in Birka.


 * Rolled pleats create tubular pleats which run the length of the fabric from top to bottom. A piece of the fabric to be pleated is pinched and then rolled until it is flat against the rest of the fabric, forming a tube. A variation on the rolled pleat is the stacked pleat, which is rolled similarly and requires at least five inches of fabric per finished pleat. Both types of pleating create a bulky seam.


 * Watteau pleats are one or two box pleats found at the back neckline of 18th century sack-back gowns and some late 19th century tea gowns in imitation of these. The term is not contemporary, but is used by costume historians in reference to these styles as portrayed in the paintings of Antoine Watteau.